Dog attachment for log-cars



(No Model.) QSheets-Sheet 1.

. R. J. THOMPSON.

DOG ATTACHMENT FOR LOG CARS.

No. 403,898. Patented May 21 1889.

A 77 ORNE Y 8.

N. PETERS. Phnko-Liflwgmpher. Wuhinglon. [)4 C.

(No Model.) 2 Sheets-Sheet 2.v

R; J. THOMPSON. DOG ATTACHMENT FOR LOG CARS.

No. 403,898. Patented May 21 1889.

Afro/Mrs.

TERS. Fhblo-Lhhognphor, wumm. n. c

UNITED STATES PATENT OFFICE.

ROBERT J. THOMPSON, OF GRANDIN, MISSOURI.

DOG ATTACHMENT FOR LOG-CARS.

SPECIFICATION forming part of Letters Patent No. 403,898, dated May 21,1889. Application filed November 15, 1888. Serial No. 290,906. (Nomodel.)

To all whom it may concern:

Be it known that I, ROBERT J. THOMPSON, of Grandin, in the county ofCarter and State of Missouri, have invented new and useful Improvementsin Dog Attachments to Log Cars,

.Wagons, &c., of which the following is a full,

clear, and exact description.

My invention relates to an improved dog attachment for log cars, wagons,sleds of all descriptions, and log-decks in saw-mills, and has for itsobject to provide a simple device whereby the logs may be effectuallyretained in position upon the bed, of a car or wagon or other logcarrier or holder and expeditiously released therefrom at the propertime.

The invention has for its further object to provide a series of dogs soarranged that the said dogs may be raised or lowered simultaneously, andwherein the dogs upon each side of the bed may be manipulatedindependently.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth and pointed out inthe claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a plan view of the bed of a log car or wagon having myimprovement applied. Fig. 2 is a side elevation of the same. Fig. 3 is afront elevation. Fig. 4 is a trans verse section taken on line 00a; inFig. 1,looking in the direction of the arrows indicated in connectionwith the said figure. Fig. 5 is a front elevation of a slightly-modifiedform of the invention, illustrating the dog upon the left as retained ina vertical position and the dog upon the right free to operate. Fig. 6is a similar view illustrating an opposite position of the dogs. Fig. '7is a plan view of a further modification, and Fig. Sis a front elevationof Fig. 7.

In carrying out the invention cross beams or bolsters 10 are secured tothe bed of the car or wagon or other log carrier or holder, which,asshown, consists of two spaced parallel longitudinal beams, 11. Thebolsters may be attached to the longitudinal or reach beams in anysuitable or approved manner one being preferably at the front or nearthe front end of the reach-beams and the other at or near the rear endof the same. The bolsters are ordinarily provided with a metal plate,12, secured to the upper face to prevent the logs from wearing saidsurface. Dogs 13 are pivoted to each of the bolsters at or near theirextremities, the dogs attached to the rear bolster being pivoted uponthe inner face and the dogs of the forward bolster being pivoted uponthe front face of the same, as best illustrated in Fig. 1. In pivotingthe dogs to the said bolsters, the pivotal pin is also passed throughthe outer end of a shield, 14, which shield is curved in direction ofthe bolsters and rigidly secured at its inner end thereto, as bestillustrated in Figs. 1 and 3.

Near each of the reach-beams 11 a metal guideloop, 15, is secured to thebolster, and

a push-bar, 16, is passed through the said loops to a pivotal connectionwith the lower end of the dogs, as illustrated in Fig. 3. Each dog isprovided with one push-bar, and the approaching ends of the severalpush-bars located upon each bolster are connected by two toggle-levers,17. The approaching ends of each set of toggle-levers are connected withI the rear end of a longitudinal operating-bar,

18, the forward set of toggle-levers being pivoted, also, to the saidoperating-bar at or near the forward end. The operating-bar ispreferably slightly curved near its forward extremity, as bestillustrated at 19 in Fig. 1, and the pivotal. connection of the forwardset of toggle-levers with the said operating-bar is preferably effectedat the said point of curvature.

The forward extremity of the operating-bar 18 is pivoted to anoperating-lever, 20, at or near the center of the same, whichoperatinglever is fulcrumed at one end upon the forward end of one ofthe reach-beams 11. The operatingdever 20 is preferably provided with anupwardly-extending handle, 21. The bolster-bars are preferably bracednear each end by longitudinal rods 22, as best illustrated in Fig. 1,and upon the right-hand brace-rod 22 two lengths of chain, 23 and 24,are attached, carrying at their extremities locking-pins 25 and 26. Thelocking-pin 26 (which is the forward pin) is adapted to be inserted in asuitable aperture produced in one of the reach-beams 11 in front of thehandle end of trated in Figs. 1 and 3. A slot, 27, is pro:

duced in the upper face of the operating-bar, near its forward end, tothe rear of the curve 19, which is adapted to receive a lock-lever,

. 28, pivoted upon the rear face of the front bolster. The lock-lever 28is adapted to enter the slot 27 in the operating-bar 18, to retain thedogs in a vertical or locked position, the said lock-lever serving as anadjunct to the locking-pin 26 or the locking-pin may be dispensed withand the lever 28 alone retained.

Upon one of the reach-beams 11, between the bolsters, a secondlock-lever, 29, is pivoted, which lock-lever at or near its center isalso pivoted to the operating-bar 18. The free end of the lock-lever 29is held to slide beneath an apertured yoke, 30, secured to thereach-beam opposite that upon which the end of the said lock-lever ispivoted, as is best illustrated in Fig. 1.

It will be observed that the operating-bar 18 may be reciprocated by themanipulation of the lock-lever 29, as well as by the manipulation of themain operating-lever 20. The

lever 29 thus acts in a dual capacity-that of a lock-lever and also anoperating-lever. As a lock-lever, the said lever 29 is adapted to retainthe dogs in an inclined position, admitting of the free discharge ofthelogs. This position of the dogs is brought about by carrying eitherof the levers 20 or 29 in direction of the front. The lock-pin 25 isthen placed in one of the apertures of the yoke 30, to the rear of theintermediate operating-lever or locklever 29, whereby said lever isprevented from moving, thus effectually retaining the operating-bar atits forward throw.

In the modification illustrated in Figs. 5 and 6 the dogs 13 are pivotedto the bolsterbars 10 in the manner hereinbefore described,

and a push-bar, 16, is likewise pivoted to the lower end of each of thesaid dogs located upon each of the bolsters. The push-bars 16 are,however, made to reciprocate in ajacket, 31, rigidly attached to thebolster, which jacket is provided with top and bottomvertically-aligning apertures 32, and the push-bar is also provided withan aperture adapted to register with the apertures of the jacket whenthe dogs are in a vertical position. A chain, 33, is attached to theguide-plate 14, or to the bolster at any point convenient to the jacket,which chain is provided with a lock-pin, 34, adapted to enter theapertures in the jacket and pass through the aperture in the pushbar.

The approaching ends of the opposing pushbars of each bolster areprovided with two pivoted toggle-levers, 35, as hereinafter described,and the contiguous extremities of each set of toggle-levers upon eachbolster are pivoted together, as illustrated in Figs. 5 and 6. The lowertoggle of one of the pushbars (the push-bar at the right, for instance)is carried beyondits fellow toggle-levers, to provide a handle oroperating lever, 36. Shoulders 37 are formed upon the two approachingtoggle-levers, adapted to limit the movement of the same when the handle36 is carried upward to force the dogs to a vertical position. Alock-bar, 38, is connected with the upper pivotal point of thetogglelevers by alink, 39, the said lock-bar being adapted to engagewith a hook, 40, located upon one end of the bolster.

In operation, if it is desired to unload the logs upon the right, thelock-bar 38 is made to engage with the hook: 40, as shown in Fig. 5, andthe lock-pin upon the left is passed through theleft-hand jacket andalso the lefthand push-bar, thus locking the left-hand dog in a verticalposition. The lock-pin is removed from the right-hand jacket andpush-bar, whereupon the right-hand dog is free to move. This movement.is effected by carrying the handle 36 downward, which draws in thepushbar, and consequently brings the right-hand dog to an inclinedposition below the upper face of the bolster, or nearly so. When it isdesired to discharge the logs upon the left, the

position of the parts to accomplish this result is fully illustrated inFig. 6, in which it will be observed that the lock-pin to the right isplaced in position, thereby securing the righthand dog in position, andthe lock-bar 38 is released from its hook and the left-hand pinWithdrawn from the left-hand jacket and posite that upon which the dog13 is pivoted,

as is best illustrated in Fig. 8. The pivoted dog 13 is provided with aguide-plate, 14, as in the other form hereinbefore described, and apush-bar, 16, is likewise pivoted to the lower end of the said dog,which push-bar is carried over the reach-beams 11 and pivoted to anoperating-lever, 42, fulcrumed upon the face of the bolster near the endupon which the fixed dog 41 is located. A chain, 43, is attached to thebolster-bars, or to the reachbeam, as desired, which chain carries alocking-pin, 44, as shown in Figs. 5 and 6, which locking-pin is adaptedto enter an aperture produced in the bolster below the operatinglever42, when said lever is in a horizontal position, as is best illustratedin Fig. 8, and when the lever is in a horizontal position the tion.

IOC

In this form of the device, when it is desired to discharge the logs,the pin 34 is removed and the operating-lever pressed downward to avertical position, whereupon the dogs 13 Will be brought to an inclinedposition, and will present no obstruction to the discharge of the logsfrom that side of the vehicl-e.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. The combination, with the bolster or cross-beam ofa log carrier or loader, of dogs pivoted near the opposite ends of saidbeam, push-bars connected at one end to the said dogs, toggle-leversconnected at their outer ends to said push-bars, and an operating-leverconnected with the pivotal ends of said toggle-levers, substantially asand for the purpose described.

2. The combination, with the bolster or cross-beam of a log carrier orloader, of dogs pivoted near the opposite ends of said beam, push-barsconnected to the said dogs, togglelevers connected at their outer endsto the push-bars, an operating-lever connected with the pivotal ends ofthe toggle-levers, and means, substantially as shown, for locking thesaid lever, substantially as shown and described.

3. The combination, with the front and rear bolsters or cross-beams of alog-carrier, of dogs pivoted near the outer ends of said bolsters,

push-bars connected at one end to said dogs, toggle-levers connected attheir outer ends with the inner ends of the push-bars, a longitudinalbar pivotally connected to the front and rear set of toggle-levers, anoperating-lever connected with the said longitudinal bar,

I and means, substantially as shown, for look ing the operating-lever inposition, substantially as and for the purpose described.

4. The combination, with the bolsters or cross-beams of a log carrier orholder, of dogs pivoted to the said bolster or cross-beams, push-barspivoted to said dogs, toggle-levers pivoted to the push-bars, anoperating-bar engaging the toggle-levers of each bolster, an

0 perating-lever connected with the operatingbar, and a lock-leveradapted to engage the said operating-bar, substantially as shown anddescribed.

5. The combination, with the bolster or cross-beam of a .log carrier orholder, of dogs pivoted thereto, a push-bar pivoted to said dogs, anapertured jacket inclosing said pushbars, toggle-levers pivoted to thepush-bars and to one another, one of which toggles is projected to forma lever-handle, locking-pins adapted to enter the apertures of thejacket, a locking-bar, and a link connecting said locking-bar and thetoggle-levers, all combined for operation substantially as shown anddescribed.

6. The combination, with the bolster or cross-beam of a log carrier orholder, of dogs pivoted thereto, a push-bar pivoted to said dogs, anapertured jacket inclosing said pushbars, toggle-levers pivoted to thepush-bars and 'to one another, one of which toggles is projected to forma lever-handle, locking-pins adapted to enter the apertures ofthejacket, a locking-bar, a link connecting the lockingbar and thetoggle-levers, a hook secured to the bolster adapted to receive thelockingbar, and shoulders formed upon the outer face of two opposingtoggles, all combined for operation substantially as shown anddescribed.

ROBERT J. THOMPSON.

Witnesses:

R. W. WRIGHT, WM. H. CATERN.

